Spring MVC中得到Web应用的根路径

import org.springframework.web.context.ContextLoader;

import javax.servlet.ServletContext;

/**
* Created by Gong_Yi on 2018/1/26.
*/
public class G {
String webRootUrl = "/";

ServletContext servletContext = ContextLoader.getCurrentWebApplicationContext().getServletContext();
String webRootPath = servletContext.getRealPath(webRootUrl);
}